Electrical properties of phosphate glasses containing a large amount of copper halides were studied . The total electrical conductivity changes depending on both the ratio of a cuprous value to the total copper and the volume of halide content in the glass . The difference in electrical conductivities was about two orders of magnitude depending on the volume of halide content in the glass. The electronic conductivity determined by the d. c. polarization method was considerably high, and its

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... sport number ranged from 1 to 5%, suggesting that hopping conduction between Cu+ and Cu2+ might take place . The glasses with higher electrical conductivity have much higher drift mobility of both ionic and electronic carriers than those with lower electrical conductivity. It was assumed that halide ion drastically increases the mobility of carriers in the glass. It is suggested by IR spectra that the structure of glasses consists mainly of metaphosphate chains. [